Yes, they do make USB 3 to Ethernet.
What issues are you having with the current laptop connecting? Are you connecting via Wifi or Ethernet? What is the OS on the troublesome laptop?
oh im so pissed. i typed a nice long descriptive missive of my issues and it never got posted. lost in the poor connections someplace...
here goes again:
not quite a year ago, i had issues with my internet. the troubleshooter (through microsoft on computers) showed internet getting from the "earth/world" icon to my house to my computer. but there was no internet signal. this was regardless of trying wifi or cat5e...
i replaced my router with a new of the same model (netgear something) no luck.
i replaced my modem with a new of the same model (motorola surfboard 6300 i think) no luck.
i went back to my original modem and a new Linksys ac1750. this gave me internet through both wifi and ethernet. my wife has great connectivity through wifi (she hasnt got a ethernet port) and my wife sometimes has intermittent internet.
ever since i got back online (january-ish), ive have no print capability. my brother is connected to the router via cat5e. my computer shows it "offline".
my internet still is sketchy with wifi giving me "connection timed out" too many times, so ive been working with a cat5e ethernet cable.
my laptop is about 8 years old (?) and i have Win7
my daughters laptop is about 4 years old and started with Win8.1 but upgraded to Win10
my wifes laptop is 1 year old and has Win10
of the 3, connection stability is worst to best
i would have thought that the router would be backward compatible but it doesnt appear to be. ive about lost all patience with my printer as well.
geek squad will gladly come out for $75 and hour (or more?) but they wont guarantee any fix to my system...
ive checked and rechecked and rechecked all of my connections and used new cat5e cables and just kind of given up. anything i need printed, i email to myself at work and print...